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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _COMMON_NVM_H_
#define _COMMON_NVM_H_
#include <stddef.h>
/* Determine if area is erased. returns 1 if erased. 0 otherwise. */
int nvm_is_erased(const void *start, size_t size);
/* Erase region according to start and size. Returns < 0 on error else 0. */
int nvm_erase(void *start, size_t size);
/* Write data to NVM. Returns 0 on success < 0 on error. */
int nvm_write(void *start, const void *data, size_t size);
/* Determine if flash device is write protected */
int nvm_is_write_protected(void);
/* Apply protection to a range of flash */
int nvm_protect(void *start, size_t size);
/* Map MMIO address to actual address in flash */
uint32_t nvm_mmio_to_flash_offset(void *p);
#endif /* _COMMON_NVM_H_ */
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